GM Service Manual Online
For 1990-2009 cars only

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Action

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Schematic Reference: Door Control Module Schematics

DEFINITION: Diagnosis of one of the following DIC messages:

    • DRIVER DOOR AJAR
    • PASSENGER DOOR AJAR
    • LEFT REAR DOOR AJAR
    • RIGHT REAR DOOR AJAR

1

Did you perform the Door Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Door Systems

2

Verify that the Door Ajar Message Always On complaint is present.

Does the Door Ajar Message system operate as described in the system description and operation?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF
  3. Close all doors.
  4. With a scan tool, observe the parameter of the suspect door ajar switch in the Driver Door Module, Inputs list:
  5. • Driver Door Ajar Sw.
    • Passenger Door Ajar Sw.
    • Left Rear Door Ajar Sw.
    • Right Rear Door Ajar Sw.

Does the scan tool display OFF?

Go to Testing for Electrical Intermittents in Wiring Systems

Go to Step 4

4

  1. Turn OFF the ignition.
  2. Disconnect the harness connector of the suspect door ajar switch.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the Door Ajar Switch parameter.

Does the scan tool display OFF?

Go to Step 7

Go to Step 5

5

Test the door ajar signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 6

6

Inspect for poor connections at the harness connector of the suspect door module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 8

7

Inspect for poor connections at the harness connector of the suspect door ajar switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 9

8

Replace the suspect door module. Refer to Door Control Module Replacement .

Did you complete the replacement?

Go to Step 10

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9

Replace the door lock actuator containing the suspect door ajar switch. Refer to Front Side Door Latch Replacement or Rear Side Door Latch Replacement .

Did you complete the replacement?

Go to Step 10

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10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2